Scientists try to understand how 2 million-year-old fossils fit among ancient species

By Stephen Ornes, 16:38 PM September 28, 2011

Scientists recently discovered two sets of 2 million-year-old fossils in a cave in South Africa. The bones might belong to an early ancestor of modern humans. Or, they might not. It depends whom you ask.

Lee Berger, an anthropologist at the University of the Witwatersrand in Johannesburg, South Africa, discovered the fossils. Berger leads an international team of anthropologists, scientists who study humankind, and other researchers who have been studying the bones.